“The Devil’s Keep” is writer/director Don Gronquist’s 1995 follow up to “Unhinged” (see previous episode), and if you love real-time YouTube how-to videos, mixed with mute, albino, geriatric, female Nazis, then this is the movie for you. Filmed in Portland, it’s the story of two high schoolers following a series of puzzles leading to “The Devil’s Keep” — hidden Nazi gold. So is this movie gold? Find out on this episode of “Portland at the Movies.”